Learn to interface dc motor with microcontroller like avr 8051 pic using h bridge l293d motor driver and sample code for programming in embedded c and assembly language. I already posted about interfacing dc motor with pic microcontrollerin our robotics applications we may have to control the speed of the dc motor in this tutorial we will see how to control the speed of a dc motor using pulse width modulation by using pwm we can easily control the average power delivered to a load and by thus we can easily control the speed of the dc motor. Motor driver for dc motor interfacing with 8051 microcontroller to overcome the problems in their interfacing a motor driver ic is connected between microcontroller and dc motor motor driver is a little current amplifier. In some of the electronics projects you may want to control a dc motor with 8051 microcontroller the maximum current that can be sourced or sunk from a 8051 microcontroller is 15 ma at 5v. The four quadrant dc motor speed control operation can be achieved by interfacing dc motor with 8051 microcontroller the speed of the motor as well as the operation of motor in four quadrants such as forward brake reverse brake clockwise anti clockwise rotation can be controlled using 8051 microcontroller
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